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January 26,2005 <br />Mr. Lonnie Brokke, C,p.R.P <br />Directorof Parks and Recreation <br />2661 Civic Center Drive <br />Roseville. Minnesota 55113 <br />.�rt <br />��� �F��� <br />fr��.;l�Ff=T�� <br />Re: Proposal for Professional Engineering Services (REVISION2) <br />John Rose Oval - Refrigeration System Repair� and Improvements <br />Dear Mr. Brokke: <br />Thank you for taking the time to meet with Jim D��enedet and myself. Stevens Engineers is pleased to <br />have the opportunity to present a proposal to provide professionalengineering services for the refrigeration <br />system repairs and improvements at the John Rose Oval. We have the necessaryexperience in designing <br />refrigeration systems and ice systems for ice rink facilities to successfullycomplete this project for the City <br />of Roseville. <br />Project Understanding <br />The City of Roseville is seeking an engineering firm to provide design and other engineering related <br />services for the rehabilitation of the refrigeration chiller vessel and refrigeration system improvements at <br />the John Rose Oval Skating Facility <br />The John Rose Minnesota Oval is a skating facility that host <br />internationalcompetitions in additiar� to serving the local <br />skating enthusiast The 110,000 square foot ice sheet <br />incfrad�s a 400-meterspeed skating track, a bandy rink, <br />hockey rinks and recr�atior�a) skating. The construction of the <br />facility was completed in 1993. <br />� _ .. _ .� . <br />. . �y <br />.� ���. � �•'A"" ��� � <br />' � ��':ii� <br />- � � _ .} � <br />��=y �. '��'r-�i �{�' . <br />_ ,•r __ I: <br />;t <br />��.��� 1'� <br />' �:�; + .� <br />The existing refrigeration system is an indirectammoniaand ���!# �' <br />.�. --�:► <br />calcium chloride system. The capacity of the system is ��:,,��- <br />approximately80�tons. Thechiller, surgedrumandscrew � �-� ~� �� ���=i <br />compressors are industrial grade refrigeration The John Rose Oval has one ofthe largest <br />refrigerafion systems sewing an ice skating rink <br />equipment manufactured by Vilter Manufacturing. �a�,,;�,, <br />Th� brine pumps circulate the calcium chloride brine through several;�ping zones in the concrete ice rink <br />floor with a total flow rate of approximately 5500 gpm. The refrigeration system at the John Rose Oval is <br />one of the largestsystems serving an ice skating facility. For comparison, a typical single ice rink <br />refrigeration system has a capacity of around 100 tons while the Super Rink in Blaine operates a 315 ton <br />refrigerationsystem to serve four ice rinks. <br />�:1Marketingl2�04 I'roposalsi�a?�i� Rose Oval.d�c <br />1656 Livingstone Road • Hudson. �I 54Q��i <br />715-386-5819 . 651-436-2075 � 800-822-7670 . fax: 715-386-5879 . www.sievensengineers.com <br />� <br />� <br />